Polycyclization
聚环作用
🗣️ 情景例句
As Ms. Smith has indicated on several previous occasions.
史密斯夫人在先前的几个场合已表示过我们对目前的印刷的安排很满意。
I am bored to death.
我无聊死了。
She doesn't approve gambling.
她反对赌博。